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DNV Grade EH36 Shipbuilding Steel Plate - NV E36 High-Strength Marine Structural Steel

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DNV Grade EH36 is a high-strength, low-alloy shipbuilding structural steel plate certified by Det Norske Veritas (DNV). It features excellent cryogenic toughness, stable mechanical properties, good weldability, and resistance to marine corrosion, making it the preferred high-strength steel grade for deep-sea vessels operating in cold regions and deep-sea offshore engineering projects. Our company supplies DNV Grade EH36 shipbuilding steel plates in a full range of specifications. All products undergo rigorous factory inspections and hold complete official DNV certification, fully meeting international offshore engineering construction codes, global shipyard procurement standards, and international project bidding requirements.

Certification :
DNV Rules
Grade :
DNV Grade EH36 (NV E36)
Thickness :
5.0 - 150.0 mm
Width :
1500.0 - 4000.0 mm
Length :
6000.0 - 18000.0 mm

Special thickness, width, and length can be negotiated separately.
We also provide customized processing services.If you have any questions, please contact us.

Overview

1. What is DNV Grade EH36 shipbuilding steel plate?

DNV Grade EH36 shipbuilding steel plate is a high-quality, high-strength, low-alloy structural steel plate for marine applications that offers outstanding low-temperature toughness and is manufactured and certified in strict accordance with DNV regulations.

DNV Grade EH36 shipbuilding steel plate is a top-tier E-class high-strength hull structural steel specifically tailored for polar navigation, extremely cold waters, and heavy-duty offshore engineering projects. It offers higher structural strength, excellent impact resistance at -40°C, stable mechanical properties, superior weldability, and outstanding resistance to marine corrosion. It is the preferred core structural material for polar ocean-going vessels, high-latitude offshore oil and gas platforms, deep-sea marine engineering projects, and global ultra-large vessel construction projects.

2. Meaning of the Designation

DNV: Certified by Det Norske Veritas (DNV)

E: Stands for “Quality Grade,” indicating that the steel has passed an impact test at -40°C

H: Stands for “High Strength”

36: Stands for “Strength Grade,” indicating that the minimum yield strength of the steel is 355 MPa (≈ 36 kgf/mm²)

Available Specifications and Dimensions

Product	DNV Grade EH36 Shipbuilding Steel Plate
Certification	DNV
Grade	EH36
Material Category	Heigh-Strength Structural Steel for Ship and Ocean Engineering
Thickness	5 - 150 mm
Width	1500 - 4000 mm
Length	6000 - 18000 mm
Delivery Conditions	Normalized (N), Thermo-Mechanical Controlled Processed (TMCP).
Surface Conditions	The surface is in its original condition; surface treatments such as sandblasting, rust removal, oiling and painting are available.
Testing	Tensile test, Charpy V-notch impact test, Ultrasonic testing (UT), Z-direction property test (Grades Z15/Z25/Z35).
Applications	Used for critical hull structures on polar vessels, LNG carriers, and large ocean-going vessels, as well as load-bearing structures in offshore oil and gas and offshore wind power projects.
MOQ	5 tons (small orders can be negotiated).
Delivery Time	15 - 20 days after order confirmation (urgent orders accepted).
Packaging	Standard export packaging for sea freight (waterproof paper + steel strapping) or customised as required.
Country of Origin	China

Chemical Composition

Chemical Composition (Heat Analysis, wt %)

Grade	C	Si	Mn	P	S	Cu	Cr	Ni	Nb	V	Ti	Mo	Als
DNV EH36 (NV E36)	≤ 0.18	≤ 0.50	0.90 - 1.60	≤ 0.025	≤ 0.025	≤ 0.35	≤ 0.20	≤ 0.40	0.02 - 0.05	0.05 - 0.10	≤ 0.02	≤ 0.08	≥ 0.015

Carbon Equivalent (wt %)

Thickness (mm)	5 - 50	50 - 150
Typical CEV (wt %)	≤ 0.38	≤ 0.40

Calculation formula (IIW): CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15

Mechanical Properties

Tensile Test

Grade	Yield Strength (ReH), MPa	Tensile Strength (Rm), MPa	Elongation (A), %
DNV EH36 (NV E36)	≥ 355	490 - 630	≥ 21

Charpy (V-notch) Impact Test

Grade	Thickness, mm	Temperature, ℃	Impact Energy, KV₂ / J
Grade	Thickness, mm	Temperature, ℃	Longitudinal	Transverse
DNV EH36 (NV E36)	≤ 50	- 40	≥ 34	≥ 24
	> 50 - 70	- 20	≥ 41	≥ 27
	> 70 - 150	- 20	≥ 50	≥ 34

Applications

I. Ocean-Going / Polar Vessel Construction (Core Applications)

1. Applicable Vessel Types

Polar ice-class vessels: Icebreakers, polar research vessels, ice-class bulk carriers, Arctic LNG carriers.

Large ocean-going cargo vessels: 10,000-TEU container ships, Very Large Crude Carriers (VLCCs), bulk carriers, ore carriers, roll-on/roll-off (RO-RO) ships.

Special-purpose vessels: LNG/liquid cargo carriers, FPSOs (Floating Production, Storage, and Offloading units), large cruise ships, warships/frigates, offshore support vessels, and wind turbine installation vessels.

2. Key Hull Components

High-strength decks, deck side plates, deckhouse side plates, and thickened ice-belt plates at the bow (to withstand floating ice impacts).

Outboard side plating, keel, hatch coamings, cargo hold longitudinal frames / transverse bulkheads.

Bow overhang, stern rudder machinery compartment, main engine pedestal, crane pedestal, marine crane structures.

Liquid cargo tank bodies, cryogenic tank containment structures, critical welded joints in thick-plate structures.

II. Offshore Oil and Gas Engineering

Leveraging low-temperature toughness to meet the demands of offshore projects in extremely cold waters such as the Arctic and the North Sea:

1. Fixed offshore platforms: Jack-up rigs, topsides, columns, and main deck girders.

2. Floating equipment: Semi-submersible drilling rigs, FPSOs, FPUs (floating production units), and SPAR platform cylinders.

3. Subsea Equipment: Subsea pipelines, subsea manifolds, deepwater risers, and subsea pressure-resistant support structures.

4. Arctic oil and gas production platforms and main structures of ice-class drilling vessels.

III. Offshore Wind Power Equipment

Offshore wind power facilities are subjected to long-term alternating wave loads and low winter temperatures; DNV EH36 is the mainstream thick-plate material:

1. Wind turbine foundations: monopiles, jacket foundations, transition piles (TP), and lower sections of subsea towers.

2. Hulls of offshore wind turbine installation vessels, crane support booms, and floating wind turbine structures.

3. Wind turbine platform decks, crane bases, and mooring structural components.

IV. Port Machinery and Coastal Infrastructure

1. Large port equipment: gantry cranes, portal cranes, and the main beams and bases of container cranes.

2. Coastal engineering: fenders for deep-water terminals, steel structures for breakwaters, causeways, barges, and floating docks.

3. Steel structures for seawater intake systems at coastal power plants and steel box-girder bridges spanning the sea (main beams in marine corrosive environments).

V. Specialized Onshore Steel Structures

1. Cryogenic storage tanks, LNG onshore storage tanks, and large pressure vessels.

2. Load-bearing structures for heavy-duty construction machinery and mining equipment in extremely cold regions.

3. Key load-bearing beams for high-rise buildings with high weather resistance and large steel-structured industrial plants (coastal projects in marine climates).

Other Information

Key Advantages of DNV Grade EH36 Shipbuilding Steel Plates

1. Excellent low-temperature toughness at -40°C

Ensures that structures possess reliable resistance to brittle fracture under extreme climatic conditions, such as in polar and subarctic waters, thereby comprehensively guaranteeing safety during low-temperature service.

2. Higher Structural Strength

With a yield strength of ≥355 MPa, it offers excellent load-bearing capacity and structural rigidity, supporting lightweight hull design and effectively increasing the vessel’s cargo-carrying capacity.

3. Excellent Welding and Fabrication Properties

Suitable for conventional welding, flame cutting, bending, rolling, polishing, and various forming processes. It offers high on-site welding efficiency, strong adaptability to construction conditions, and facilitates the fabrication of complex structures.

4. Outstanding Adaptability to Marine Environments

Possesses excellent resistance to salt spray corrosion and atmospheric aging, enabling long-term service in harsh marine, coastal, and polar environments.

Our Service Advantages

1. Authoritative Official DNV Certification

All products have passed rigorous DNV certification and come with factory test reports.

2. Full-Range Customization Services

We support customization across all specifications and dimensions, as well as value-added processing services.

3. Stable Supply Capacity

With ample stock on hand, we support both custom production and bulk export orders.

4. Professional Global Export Services

We are well-versed in international maritime steel trade regulations and provide global logistics and professional after-sales technical support.

FAQ

Q1:

What heat-treated conditions are available for DNV Grade EH36 shipbuilding steel plates?

We offer two heat-treated conditions: TMCP and normalized. Both provide a more uniform internal microstructure and more stable low-temperature toughness, making them ideal materials for marine engineering projects with stringent requirements in extremely cold environments.

Q2:

What are the main advantages of DNV EH36 compared to DNV EH32 marine steel?

DNV EH36 has a higher yield strength (355 MPa vs. 315 MPa) and a correspondingly higher tensile strength, resulting in greater load-bearing capacity and structural resistance to deformation. While maintaining the same excellent low-temperature toughness as EH32 (-40°C), EH36 is better suited for large polar vessels and deep-sea offshore platforms with more demanding structural load requirements.

Q3:

What custom processing services can you provide for DNV EH36 shipbuilding steel plates?

We offer a full range of value-added processing services, including precision digital cutting, flattening, surface polishing, rust removal, edge chamfering, and custom part fabrication based on customer drawings. We can also customize steel plates to special dimensions to meet the unique construction requirements of heavy-duty offshore engineering projects in extremely cold environments.

Q4:

Can your company provide the official DNV certification and factory test reports for DNV EH36 shipbuilding steel plates?

Yes. All of our DNV EH36 shipbuilding steel plates hold valid official DNV product certifications and are accompanied by Type 3.2 factory test reports (MTC) in accordance with EN 10204. These certificates are internationally recognized and fully support global project bidding, engineering acceptance, and cross-border customs clearance processes.

Q5:

What are the differences between NV A36, NV D36, and NV E36 shipbuilding steel plates?

The key differences between these three types of shipbuilding steel plates lie in their low-temperature impact toughness and applications:

Grade	Yield Strength	Tensile Strength	Impact Test Temperature	Applications
NV A36	≥ 355 MPa	490–630 MPa	0°C	Coastal vessels, decks, superstructures, mild-temperature waters
NV D36	≥ 355 MPa	490–630 MPa	-20°C	Vessels in cold regions, hull bottoms, bulkheads
NV E36	≥ 355 MPa	490–630 MPa	-40°C	Arctic vessels, offshore platforms, low-temperature marine structures